The principles of two schemes of signal detection that can be employed in all - fiber current transducer are abstract analyzed . the influence on all - fiber current transducer of linear birefringence in optical fiber is analyzed and partial resolvents are concluded in this part too . at the end of this thesis , we picture the nice prospect of all - fiber current transducer when it is used in the department of electric power , and some problems that should be solved when all - fiber current transducer is utilized pragmatically are summed up 对二向色性偏振器的敏感波长区域进行了实验研究，对多层介质膜的两种类型偏振器应用在全光纤电流传感器中的原理分别进行了理论分析和实验研究；对zf1磁光玻璃进行了拉纤的实验；对全光纤电流传感器中，选择光源时要考虑的因素进行了分析；分析了全光纤电流传感器中两种信号检测方案的原理；分析了光纤中线性双折射对系统性能的影响以及解决的方法。
